RMS: Woofer: 1 x 10W Satellites: 2 x 3W Frequency response: 40Hz - 20kHz Channel crosstalk: >40dB S/N ratio: >70dB Speaker system: 4" woofer on main unit 2 x 2.5" drivers on satellite Units Product size Subwoofer: W150 x H205 x D247mm Satellite speaker: W80 x H115 x D95mm Packing size: L525 x W300 x H545mm Packing: 4 sets/carton QTY 20: 1364 sets 40: 2800 sets 40 HQ: 3440 sets